Ms Dahl, who ventures into the skies each morning to report on the city's traffic for the Today Show and various radio stations, spotted the sea creature about 200 metres offshore of Godwin Beach in Deception Bay, north of Brisbane.

She said it was the second time in two weeks she had spotted a shark in the area but could not say if it was the same one, or what type it might be.

"I was pretty stoked I was able to take a photo, I saw it last time but we did a lap and by the time we got back it went into the darker parts of the water," she said.